114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/*-
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* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: tun.c,v 1.12 1999/04/26 08:54:25 brian Exp $
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*/
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#include <sys/param.h>
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#include <sys/socket.h> /* For IFF_ defines */
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#include <net/if.h> /* For IFF_ defines */
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#include <netinet/in.h>
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#include <net/if_types.h>
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#include <net/if_tun.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <sys/un.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#ifdef __NetBSD__
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#include <stdio.h>
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#include <unistd.h>
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#endif
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#include "mbuf.h"
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#include "log.h"
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#include "timer.h"
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#include "lqr.h"
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#include "hdlc.h"
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#include "defs.h"
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#include "fsm.h"
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#include "throughput.h"
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#include "iplist.h"
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#include "slcompress.h"
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#include "ipcp.h"
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#include "filter.h"
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#include "descriptor.h"
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#include "lcp.h"
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#include "ccp.h"
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#include "link.h"
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#include "mp.h"
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#ifndef NORADIUS
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#include "radius.h"
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#endif
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#include "bundle.h"
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#include "tun.h"
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void
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tun_configure(struct bundle *bundle, int mtu)
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{
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#ifdef __NetBSD__
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struct ifreq ifr;
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int s;
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s = socket(AF_INET, SOCK_DGRAM, 0);
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if (s < 0) {
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log_Printf(LogERROR, "tun_configure: socket(): %s\n", strerror(errno));
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return;
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}
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sprintf(ifr.ifr_name, "tun%d", bundle->unit);
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ifr.ifr_mtu = mtu;
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if (ioctl(s, SIOCSIFMTU, &ifr) < 0)
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log_Printf(LogERROR, "tun_configure: ioctl(SIOCSIFMTU): %s\n",
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strerror(errno));
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close(s);
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#else
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struct tuninfo info;
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memset(&info, '\0', sizeof info);
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info.type = IFT_PPP;
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#ifndef NORADIUS
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if (bundle->radius.valid && bundle->radius.mtu && bundle->radius.mtu < mtu) {
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log_Printf(LogLCP, "Reducing MTU to radius value %lu\n",
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bundle->radius.mtu);
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info.mtu = bundle->radius.mtu;
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} else
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#endif
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info.mtu = mtu;
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info.baudrate = bundle->ifSpeed;
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#ifdef __OpenBSD__
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info.flags = IFF_UP|IFF_POINTOPOINT;
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#endif
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if (ioctl(bundle->dev.fd, TUNSIFINFO, &info) < 0)
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log_Printf(LogERROR, "tun_configure: ioctl(TUNSIFINFO): %s\n",
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strerror(errno));
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#endif
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}
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